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Cone Crusher Maintenance
Notes
A. the materials must be in the middle of the distributor, see diagram 14. it is not allowed to put the materials into the crushing chamber directly, because it will make the crusher overloaded and the liner plate will be abraded unevenly.
Correct feeding conditions:
a. the materials are distributed equally to the crushing chamber.
b. The quantity of materials should not higher than the mortar.
B. the max feeding size should not equal to the feed opening, (the max feeding size=85% of the feed opening) otherwise, it will lead to:
a. the capacity is low
b. some spare parts will be damaged.
C. crusher is not allowed to start in overload condition in case of accident.
E. the locking system and hydraulic station should be checked often to avoid problems.
Capacity of the crusher
Capacity is subject to feeding method, material size, size of final product, material nature, temperature, etc. the range is wide. The capacity is under certain conditions.
Change of mortar
There are u-shaped bolts on the adjusting ring. Fill zinc alloy into the space. When installing or changing the mortar, after 6-8 hours’ operation, check the fastening conditions and screw the U-shaped bolts again.
Change of the crusher inner wall
The Cone crusher inner wall is fixed to the cone crusher body through a cone end. There is zinc alloy between them. When installing or changing the inner wall, after 6-8 hours’ operation, check the fastening conditions. If there is loose, fasten it.
Mesh of gears
The friction of round plate changes the gap between gears. To make the gears properly meshed, clients are required to put a mat on the bottom cover. The thickness of the mat should equal to the friction of the round plate.
Bowl-shaped bearing and sealing device
When installing the bowl-shaped bearing, make sure the oil seal is not damaged by the steel cable.
When assembly, scrape the spherical surface to ensure the space between crushing cone and the spherical surface is kept within 0.35-0.5mm.
The bowl-shaped tile is fixed to the bowl-shaped bearing support through lock pins to prevent the tile rotate in circle.
The bowl-shaped bearing support and the frame are fixed together by lock. If there is space between the support and the frame, deal with it immediately.
The cylinder liner and the frame is the third transient assembly.
To avoid the liner rotating, the upper part of liner is filled with zinc alloy. When changing new liner, make sure it is according to the practical size because the after long time’s operation and assembly, some changes may happen to the crusher. If the space is too large, the liner will be broken.
Conic liner
The cone cover and the eccentric shaft should wring each other. Fill in some zinc alloy to stop the cover rotating. The space should be full of zinc alloy. The cover may change its shape due to the hot zinc alloy, so check the size of d1, d2 and B of a new cover. If it is incorrect, correct it. When making spare parts, make sure it is fit for the practical size of the inner diameter of eccentric shell.
Springs
A. The function of springs is: when some uncrushed materials enter the crusher, they will prevent crusher from damaging. Therefore, the pressure of the springs and the crusher is corresponding to each other. If the crusher is in good condition, the spring is stable; only when uncrushed materials enter the machine will the springs be pressed.
B. if the upper part of crusher vibrates, clients are required to check the machine carefully and solve the problem. If pressing the springs incorrectly, some parts may be damaged, because pressing the spring will increase the pressure of the crusher.
The reason why the upper parts of crusher vibrate is:
a. feeding unevenly or overfeeding
b. there are many small lump materials in the raw materials or the humidity is too high
c. the discharge opening is too small.